CN1221672A - Method and special appts. for generating polyurethane foamed blocks in pressure regulating chamber - Google Patents
Method and special appts. for generating polyurethane foamed blocks in pressure regulating chamber Download PDFInfo
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- CN1221672A CN1221672A CN 98126390 CN98126390A CN1221672A CN 1221672 A CN1221672 A CN 1221672A CN 98126390 CN98126390 CN 98126390 CN 98126390 A CN98126390 A CN 98126390A CN 1221672 A CN1221672 A CN 1221672A
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- storehouse
- foaming
- mixed resin
- shower nozzle
- pressure
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Abstract
A process for preparing polyurethane foam blocks with different densities in pressure-adjustable cabin features that the traditional steps such as triggering mixed basic material, expansion, extending and shaping are conducted in a foaming cabin with defined rated pressure. Its dedicated apparatus is composed of a sealed horizontal pressure-adjustable cabin, spray gun moving freely in the cabin and raw materials mixer.
Description
The invention belongs to improvement to the polyurathamc production method, and the special equipment that designs for new method.
The foaming polyurethane is widely used among industrial and agricultural production and the daily life with advantages such as its softness, insulation, good springiness, price are low, in light weight, and consumption increases severely day by day.Requirement to its quality is also more and more higher, and kind is also more and more, and low-density is (less than 10kg/m
3) (be higher than 40kg/m with high density
3) the demand of polyurathamc also more and more amount is big, traditional handicraft and equipment can not satisfy present requirement far away at present.Be to continue to use basically in traditional handicraft at normal pressure (referring to an atmospheric pressure) foam process.Determine the batching of good required each component in the traditional handicraft by predetermined density index, after mixing, stir again.Mixed base-material promptly begins to inspire, expand in a short period of time.Mixed resin shower nozzle in the storehouse sprayed in the foaming storehouse promptly expand along bulkhead after (storehouse of foaming usually is an open containers), the material piece that the is generated shape with foaming storehouse inwall institute envelope basically is identical.The foamed polyurethane of particular density is then more grasped the uniformity of its quality than difficulty with traditional handicraft.Owing to add into poisonous carrene or fluorine Lyons in the existing prescription of continuing to use of restriction of process conditions,, promote running smooth of foaming process to form sufficient carbon dioxide air source.But therefore cause the highly polluted of production environment, and grievous injury operator's health.Do not adopt above raw material, then expansion rate and prolonged expansion direction etc. all the utmost point be difficult to control, the foaming machine complex structure that for a change above shortcoming is designed and operate very big difficulty is arranged.Sacrifice production cost, or cause causing foaming inhomogeneous, even occur being mingled with that raw material promptly sacrifice is that present improvement is faced with in a dilemma condition.Improve traditional handicraft and equipment thereof and become an instant problem.
Purpose of the present invention promptly provides a kind of method of new processing foamed polyurethane and cooperates the designed special equipment of this method, it can be realized under the cheap prerequisite of equipment investment, realize simple to operately, steady quality, cost descend and reduce the effect of environmental pollution.
Key Design of the present invention is the foaming operation in the non-pressure vessel in the traditional handicraft changed in an airtight pressure regulating chamber carries out.That is to say that the inspiration, expansion, the forming process that make in the traditional handicraft finish in airtight pressure regulating chamber, the density requirements of storehouse internal gas pressure set basis product and determining, air pressure in the storehouse is benchmark by negative to just adjustable with the standard outdoor atmospheric pressure, specifically can adopt to bleed (negative pressure) or inflate (malleation) and realize.The inspiration of mixed resin is expanded along with mixed resin shower nozzle moving and progressively be shaped and be full of whole pressure regulation foaming storehouse in the storehouse.
Because the improvement of above operation, make whole technology obtain breakthrough, realized first not using under the situation in carrene or fluorine Lyons and finished high-quality foamed polyurethane manufacturing by being adjusted at of pressure, polyurathamc for nominal density adopts the technological measure of airtight level pressure to obtain abundant and high efficiency utilization at the limited carbon dioxide that does not use carrene or fluorine Lyons mixed resin to produce, and produces the effect of getting twice the result with half the effort.Only have amounts of carbon dioxide to discharge most after consequently opening a position, then eliminate at all in the methane dioxide of serious environment pollution or fluorine Lyons, thereby purified working environment greatly, thereby welcome warmly the on-the-spot workpeople of acquisition of experiment.Adopt the material component of new method operation back preparation foamed polyurethane to be: PPG, TDI, water (H
2O), silicone oil, ammonia catalyst and stannous octoate six components, can in advance water, silicone oil, ammonia catalyst and four kinds of stannous octoates be mixed into that a kind of to make basic batching be that three components inject mixing agitator if consider the convenience of industrial operation.Bear embodiment below the relation of the component when airtight decompression foaming storehouse between the each component be described:
The density of predetermined polyurathamc is 20kg/m
3, the new machining method of common process when in airtight pressure regulating chamber air pressure being dropped to 0.3-0.5 atmospheric pressure contrasts, and its six components base-material component weight ratio is:
The new method old technology
PPG 100 100
TDI 50-55 75
H
2O 4.5-5.5 5
Silicone oil 1-1.2 2
Ammonia catalyst 0.5 0.5
Stannous octoate 0.2 0.35
Carrene 0 12
(or fluorine Lyons)
Mixing rate basically together during the each component proportioning.
Fairly obvious, new method has not only been saved environmentally harmful carrene or fluorine Lyons, and relatively large saving the more expensive TDI of price production cost is descended significantly, and this technology can be regulated corresponding storehouse internal gas pressure value at different densities, thereby can realize effectively that the various density products of specification how wide in variety finish on same foaming machine, and success realizes the quality control of polyurathamc material piece according to air pressure adjustment.Quality product rate under realizing producing in enormous quantities stably remains on the higher level, thereby improves the rate of return on investment and the unit profit margin of the industry greatly, is an important breakthrough in the industry.
In conjunction with among the present invention to the improvement of process, another key of the present invention is to have designed in pressure regulating chamber the special equipment of producing the polyurethane foamed blocks material.
As traditional foaming machine, comprise a foaming storehouse in the designed new exclusive device structure and stretch into mixed resin shower nozzle in the foaming storehouse and the automatic mix device of the mixed resin that is connected with shower nozzle, different is that the foaming storehouse is an airtight container in the design of the present invention, from inspiring, expand into shaping is what to finish under these special process conditions, and the middle all gases that generates all can not arbitrarily be escaped.The gas of any hostile environment can both more conveniently be guided and be handled under these circumstances, has saved the application of poisonous base-material and the abundant use of limited carbon dioxide still more.The container of this sealing just is called pressure regulation foaming storehouse.For the storehouse internal gas pressure that obtains to adapt with process conditions, this container is provided with and fills (row) gas port.Can connect barometric control unit by pipeline and interface.When pressurizeing, inflate by needs, exhaust when needing decompression, the mixed resin shower nozzle that stretches in the pressure regulating chamber after reaching desirable pressure state promptly can begin routine work, the ejection mixed resin, and suitably adjust shower nozzle position in pressure regulating chamber and make and generate mixture and in the storehouse, evenly expand into and be full of whole pressure regulation foaming storehouse, promptly open a position then, discharging, realize whole process of production, more than be the basic structure design of the simplest adjustable-pressure special-purpose foaming equipment.
Produce in enormous quantities for adapting to and complete operating procedure, provide the embodiment and the accompanying drawing of special equipment below, and in conjunction with the embodiments, accompanying drawing further specifies and the objective of the invention is how to realize.
Accompanying drawing 1 is the structural representation of special equipment main body.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is that Figure 1A-A is to partial sectional view.
Fig. 4 is the right view of Fig. 1.
Fig. 5 is that shower nozzle, mix device are combined in the structural representation on the moveable carriage.
Fig. 6 is the structural representation of quick barometric control unit.
Wherein 1 is pressure regulation foaming storehouse, 1A be pressure regulating chamber fill (row) gas port, 1B is the observation window of pressure regulating chamber, and 1C is the air gauge of pressure regulating chamber, and 1D is a guide rail in the storehouse, 2 is preceding Cang Gai, 3 is back Cang Gai, and 4 is the warehouse support, and 5 are foaming storehouse heat-insulation layer, 6 is instrument control panel, 7 is foamed polyurethane, and 8 are the plastic foil lining, and 9 is the mixed resin shower nozzle, 10 represent dolly, 10A is a motor, and 10B is a governing box, and 10C is a chain, 10D is a main drive wheel, 10E is a driven pulley, and 10F is the dolly car bottom plate, and 10G is preceding sealing baffle, 10H is a limiting plate, 10I bowl-type axle, 10G, 10H, 10I forms the plastic film spindle, and 11 represent the batch mixes device, 11A is the base-material basin, 11B is the metering pump system for flowmeter and motor, and 11C is the base-material transfer tube, and 11D is a mixing agitator, 11E is the agitator transmission device, 11F is a motor, and 11G is the mixed resin carrier pipe, and 12 is plastic film, 13 is air compressor, 14 is vavuum pump, and 15 is the mesobar regulator cubicle, and 16 is to connect the pipeline that (row) gas port is filled in pressure regulation foaming storehouse, 17-19 is the pipeline switch, and 20-22 is an intermediate switch.
Accompanying drawing 1 given embodiment is one and is adapted to the design concept of standardization production special equipment.Its basic thought is that the pressure regulation storehouse (1) of foaming is designed to the bigger horizontal airtight container of volume (as required also can by vertical design), the rear and front end is provided with the front and back gas-tight silo lid (2 that can open, 3), with the charging in the favourable technological operation, discharging, maintenance, for grasping quality and the adjusting process condition that foams in the production process at any time, at sealed cabin body (1) and front and back Cang Gai (2,3) be provided with observation window (1B) and air gauge (1C), entire container is fixed on the production scene by support (4), consider be incubated on the technology need in effective foamed zones of foaming warehouse (1), set up foaming storehouse heat-insulation layer (5), in pressure regulation foaming storehouse, be provided with two tracks (1D) with the container axially parallel.Purpose is for whole mixed resin proportioner and shower nozzle are arranged within the warehouse (1).This structural design is to consider in the mass production of big moulding mixture piece, and shower nozzle can not be away from the base-material blender, in pressure regulating chamber and equipment that the base-material blender separates, rely on shower nozzle directly move be limited in scope, be unsuitable for the needs of mass production.Must move by the subsidiary mixed ingredients entire system of shower nozzle and could satisfy the scale demand that batch (-type) is produced in enormous quantities.Thereby shower nozzle (9) and coupled logical mix device (11) are assembled on the dolly (10) that can move forward and backward in pressure regulation foaming storehouse along track (1D) in the present embodiment.Like this can be along with moving of dolly (10) delivered to warehouse (1) Inner Front End with shower nozzle (9), the beginning material spray inspires after the setting pressure, dolly then slowly retreats by the speed of setting, along with the expansion of compound body, extend the space that is full of dolly the place ahead, and direction is expanded to the back-end, arrive the spacing position of rear end cap (3) until dolly, can be full of the foamed polyurethane material piece of shaping in the whole warehouse, will expect that by the help of other mechanism piece drives out from drive end bearing bracket again, can finish a production cycle.The length of warehouse (1) can be adjusted according to production capacity, is adapted to the needs of the different enterprises of large, medium and small scale.
The cross section of warehouse (1) is circular, also can be designed to rectangle, equilateral hexagon or other polygon certainly, and that such material piece of producing also just can become is cylindrical, four prism type or the like, looks the needs of particular user and changes.
Accompanying drawing 5 has provided the interior mixed resin shower nozzle (9) of warehouse, base-material mixing arrangement (11) is combined in the structural representation on the moveable carriage (10).As can be seen, to include 3-6 material-storage jar (11A) mainly be to determine according to 6 components batchings or three components batching to mix device (11).Each bin stock is irritated supporting generation the measuring pump of flowmeter and motor, and it is in order to guarantee by the flow of setting this component raw material being sent into mixing agitator (11D).The flow that the base-material of every kind of component is determined by technology leads to high-speed mixing agitator (11D) by transfer pipeline (11C).Mixing agitator also is furnished with special-purpose motor (11F) and transmission device (11E), and the mixed resin that comes out from blender (11D) is connected to shower nozzle (9) by pipeline (11G) and is ejected in the storehouse (1) of foaming.
Give the project organization of the dolly (10) that can move forward and backward in the accompanying drawing 5.It comprises a base plate (10F), and whole parts of batch mixes device (11) all are assembled on the car bottom plate (10F).Have a power motor (10A), gearbox (10B) and chain (10C) and be connected driving wheel (10D).Driven pulley (10E) and driving wheel are installed under the base plate (10F) and are engaged on two tracks (1D) in the storehouse.Front-end Design at dolly has a sealing baffle (10G), and its shape is identical with the shape of cross section in pressure regulation foaming storehouse, cross section dimension of picture in physical dimension is slightly less than.Be two zones with spatial division in the adjustable foaming storehouse so in fact, in fact sealing baffle (10G) is preceding is only real change visitor formula foaming storehouse to drive end bearing bracket (2).Be actually base-material after the sealing baffle (10G) and supply with the part activity space.Also designed the position-limiting tube (10H) of a physical dimension afterwards at sealing baffle (10G) less than it, it between two plates a bowl-type axle (10I), why so design is that the three has formed an end liner plastic film spindle, and the film plastic pocket of identical with the storehouse length that foams (or slightly long) just cover is store on this spindle.Its effect is the plastic film bag to be pulled out to cover on shower nozzle (9) external space earlier from sealing baffle and storehouse inwall formation space.After inspiring beginning, the foam polyurethane of expansion is pressed in plastic film the end liner that forms on the inwall in foaming storehouse between material piece and the inwall, and along with moving behind the dolly, the plastic film bag is pulled out gradually and finally formed and expects the identical end liner bag of block length.What thereby favourable imperial material was pulled out carries out smoothly, can not produce foamed material material and the bonding imperial material resistance that causes of foaming storehouse inwall.This is one of design feature of this equipment just also.The mixed resin carrier pipe (11G) that is connected with shower nozzle (9) promptly passes from this spindle, and to make shower nozzle (9) be fixed on sealing baffle (10G) be the dead ahead of dolly, shower nozzle downwards slightly partially, to guarantee the reasonable prolonged expansion direction of foaming body.
On back Cang Gai (3), also be provided with the instrument control panel (6) of Monitoring and Controlling mixed ingredients device feeding speed and various running statuses, power supply power line, control signal and sampled signal line all adopt cable to be connected between each equipment on instrument control panel and the dolly (10) by automatic admission machine.By the control program of setting on the control panel, monitoring facilities and executive circuit are finished the automatic control of each operation.Its control circuit is universal electronic device and just need not describes in detail one by one at this.In a word, after each corresponding control parameter is determined, with the required base-material material-storage jar (11A) of packing into, dolly (10) is arranged on the front end of regulating foaming storehouse (1), adjust the Long Position internal gas pressure by setting pressure and get final product start-up routine, end cap (3) is mobile backward along with dolly, polyurathamc promptly inspires by the density of setting and expands, shaping also extends back, automatic stopping when dolly retreats to the precalculated position, make the extension mixture reach sealing baffle (10G) and locate the whole procedure termination, open preceding Cang Gai (2), by other aid tractive, push material piece the past Cang Gai is driven out, reinforced then pass door is prepared next cycle operation.
For time in the middle of reducing, make pressure regulation foaming storehouse reach the force value that presets as early as possible, also be equipped with fast especially in this equipment and filled (row) device of air.This device is made up of air compressor machine (13) and vavuum pump (14) and a mesobar regulator cubicle (15), the mesobar regulator cubicle is a bigger pressure vessel of volume in general, also can and connect with several vessels in case of necessity (or polyphone form), mesobar regulator cubicle (15) fills (row) gas port (1A) by what switch (17) directly connect the pressure regulation gas-tight silo.Air conditioning cabinet (15) is connected respectively with compressor (13) and vavuum pump (14) by intermediate switch (20-22), the quick air pressure adjustment of Zu Chenging fills (row) device of air and can start compressor (or vavuum pump) make mesobar regulator cubicle (15) reach a certain setting air pressure in each foaming operation therefrom again.After closing Cang Gai again, can pressure regulation foaming storehouse (1) directly be communicated with mesobar surge tank (15) by opening pass (17), thereby make the storehouse internal gas pressure reach the technological design value in the short time at the utmost point, thereby shortened the technological preparation time greatly, improve the service efficiency of foaming machine, improved class's output.(row) mechanism of qi can be directly filled in foaming storehouse (1), to do the accurate adjustment of technology parameter, also can save the mesobar cabinet under the condition of small lot batch manufacture, to reduce equipment investment.
Also can be designed to vertical voltage-regulation type polyurethane foaming machine according to identical design, basic structure is similar.
Above special equipment is applicable to the polyurethane production new technology in the pressure regulation foaming storehouse, in its production process, poisonous carrene and fluorine Lyons have been omitted, and saved 20% TDI raw material, make polyurethane foamed blocks production cost descend 30% with density, particularly the product of the various density of unit production specification how wide in variety is the initiative of the industry, greatly reduce the production cost of the industry, improved the properties of product price ratio of the industry, the popularization of its process and equipment is significant to polyurethane production enterprise.
Claims (10)
1, produce the method for polyurethane foamed blocks in a kind of pressure regulating chamber, comprise in its operating procedure: preparation generates each base stock component of polyurathamc, the each component of determining by predetermined polyurethane density is in injecting mixer and the formation mixed resin that stirs, mixed resin is sprayed into the foaming storehouse, inspire, expand, be shaped, discharging, it is characterized in that from inspiring forming process be to carry out in the sealing pressure regulating chamber, the storehouse internal gas pressure requires setting (is that benchmark is by bearing on the occasion of adjustable with the standard outdoor atmospheric pressure) according to product density, and the inspiration expansion of mixed resin is moved in the storehouse along with the mixed resin shower nozzle and progressively extended shaping and be full of pressure regulating chamber.
2, according to the said method of claim 1, the component that it is characterized in that preparing the base-material of polyurethane foamed blocks is: PPG, TDI, water, silicone oil, Ammonia catalyst, stannous octoate also can be mixed into three components by back four classes.
3, according to the said method of claim 2, the referential weight that it is characterized in that the base-material each component is than (in preparation density is 20kg/m
3Foam block the time) be:
PPG 100
TDI 55
H
2O 5
Silicone oil 1.2
Ammonia catalyst 0.5
Stannous octoate 0.2
Pressure regulation foaming storehouse internal reference atmospheric pressure value is: 0.3-0.5 atmospheric pressure.
4, a kind of special equipment of in pressure regulating chamber, producing polyurethane foamed blocks, comprise a foaming storehouse (1) in this device structure, stretch into the mixed resin shower nozzle (9) in foaming storehouse and the mixed resin automatic recipe maker (11) that is connected with the mixed resin shower nozzle, it is characterized in that:
(a) this foaming storehouse (1) is the container of a sealing,
(b) this container is provided with and fills (row) gas port (1A),
(c) this fills (row) gas port (1A) and fills (row) device of air and be connected.
5, according to the said special equipment of claim 4, it is characterized in that this pressure regulation foaming storehouse (1) is a horizontal airtight container, the rear and front end is provided with openable front and back gas-tight silo lid (2,3), at gas-tight silo lid (2,3) and warehouse (1) be provided with observation window (1B) and air gauge (1C), entire container is positioned at the production scene by support (4), be provided with two tracks (1D) with the container axially parallel in pressure regulation foaming storehouse (1), shower nozzle (9) and the base-material mixing arrangement (11) that connects with it are assembled in one can be along on the dolly (10) of track (1D) front and back displacement in the storehouse (1) of foaming.
6, according to the said special equipment of claim 5, the cross section in the storehouse (1) that it is characterized in that foaming also can be rectangle, equilateral hexagon or polygon for circular.
7, according to the said special equipment of claim 5, it is characterized in that base-material mixing arrangement (11) comprises 3-6 material-storage jar (11A),, there is the measuring pump (11B) of flowmeter and motor in each material-storage jar supporting generation, lead to high-speed stirring mixer (11D) by feeding pipe (11C), transport to shower nozzle (9) from the mixed resin that blender (11D) comes out by pipeline (11G), above entire infrastructure assembling is positioned on the base plate (10F) of dolly (10).
8, according to the said special equipment of claim 5, it is characterized in that can slippage before and after the track (1D) dolly (10) by little car bottom plate (10F), power motor (10A) gearbox (10B) and the dolly driving wheel (10D) that connects by chain (10C), and driven pulley (10E) is formed, the front end of dolly is provided with the end liner plastic film spindle of being made up of sealing baffle (10G), limiting plate (10H), bowl-type axle (10I), mixed resin shower nozzle (9) promptly is positioned at the dead ahead of sealing baffle (11G) by the conveying pipeline that passes this device (11G), shower nozzle (9) downward bias.
9, according to the said special equipment of claim 5, it is characterized in that also being provided with on back gas-tight silo lid (3) instrument control panel (6) of Monitoring and Controlling proportioner feeding speed and running status, power supply and signal cable line are connected between the equipment and instrument control panel (6) on the dolly (10) by automatic admission machine.
10, according to the said special equipment of claim 4, it is characterized in that filling (row) device of air is made up of air compressor machine (13) and vavuum pump (14) and mesobar regulator cubicle, mesobar regulator cubicle (15) fills exhaust outlet (1A) by pipeline (16) with the foaming storehouse by switch (17) and is connected, mesobar regulator cubicle (15) is connected respectively with air compressor machine (13), vavuum pump (14) by intermediate switch (20-22), forms quick barometric control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98126390 CN1221672A (en) | 1998-12-29 | 1998-12-29 | Method and special appts. for generating polyurethane foamed blocks in pressure regulating chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98126390 CN1221672A (en) | 1998-12-29 | 1998-12-29 | Method and special appts. for generating polyurethane foamed blocks in pressure regulating chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1221672A true CN1221672A (en) | 1999-07-07 |
Family
ID=5229641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98126390 Pending CN1221672A (en) | 1998-12-29 | 1998-12-29 | Method and special appts. for generating polyurethane foamed blocks in pressure regulating chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1221672A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102227295A (en) * | 2008-10-30 | 2011-10-26 | 江森自控科技公司 | Palm oil-based polyurethane foam products and method of production |
| CN103273610A (en) * | 2013-05-16 | 2013-09-04 | 温岭市宇星模具有限公司 | Multi-functional blowing shoe mold |
-
1998
- 1998-12-29 CN CN 98126390 patent/CN1221672A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102227295A (en) * | 2008-10-30 | 2011-10-26 | 江森自控科技公司 | Palm oil-based polyurethane foam products and method of production |
| CN102227295B (en) * | 2008-10-30 | 2017-05-10 | 江森自控科技公司 | Palm oil-based polyurethane foam products and method of production |
| CN103273610A (en) * | 2013-05-16 | 2013-09-04 | 温岭市宇星模具有限公司 | Multi-functional blowing shoe mold |
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